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freezer: remove should_send_signal() and update frozen() 

should_send_signal() is only used in freezer.c.  Exporting them only
increases chance of abuse.  Open code the two users and remove it.

Update frozen() to return bool.

Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo 2011-11-21 12:32:25 -08:00
parent d88e4cb671
commit 948246f70a
2 changed files with 3 additions and 8 deletions
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9
include/linux/freezer.h
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@ -15,7 +15,7 @@ extern bool pm_nosig_freezing; /* PM nosig freezing in effect */
/*
* Check if a process has been frozen
*/
static inline int frozen(struct task_struct *p)
static inline bool frozen(struct task_struct *p)
{
return p->flags & PF_FROZEN;
}
@ -32,11 +32,6 @@ static inline bool freezing(struct task_struct *p)
return freezing_slow_path(p);
}
static inline bool should_send_signal(struct task_struct *p)
{
return !(p->flags & PF_FREEZER_NOSIG);
}
/* Takes and releases task alloc lock using task_lock() */
extern void __thaw_task(struct task_struct *t);
@ -166,7 +161,7 @@ static inline void set_freezable_with_signal(void)
__retval; \
})
#else /* !CONFIG_FREEZER */
static inline int frozen(struct task_struct *p) { return 0; }
static inline bool frozen(struct task_struct *p) { return false; }
static inline bool freezing(struct task_struct *p) { return false; }
static inline bool __refrigerator(bool check_kthr_stop) { return false; }

2
kernel/freezer.c
View File

@ -132,7 +132,7 @@ bool freeze_task(struct task_struct *p, bool sig_only)
return false;
}
if (should_send_signal(p)) {
if (!(p->flags & PF_FREEZER_NOSIG)) {
fake_signal_wake_up(p);
/*
* fake_signal_wake_up() goes through p's scheduler